In a large, non-stick skillet, over medium heat, melt the butter. Add brown sugar, cinnamon and salt and stir until bubbly, about 2-3 minutes.

Add diced apples and cook for 8-10 minutes or until tender but not mushy. Stir apples occasionally but not continually. You want caramelization to occur but no burning to take place.

Serve warm or allow to cool, then refrigerate unit ready to use. Warm slightly on stovetop or in microwave before serving.